Method of winding dynamo-electric-machine armature.



c. E. WILSONl METHUD 0F WINDING DYNAMO ELECTRIC MACHINE ARMATURES.

APPLICATION FILED FEB,17,1915.

Patented Jan. 28, 1919.

IIIIIII INVENTOR (ff/a r/es f. I/I//vn WITNESSES:

ATTORNEY om may concern:

"lint l, ilrorsf a 'ed tatee1 end resident in the county of Allegheny a e nsylania, have invented a eiul qffiproreinent i i" @nemo-Electricinvention relates to dynaintrelectric machines unl oar'ticnlarly to armature `tineltliei'efor54 and it has for its ooiect to method of Wining t e armatures ynaino-electiic machines which sla'll insure 'il tistribution oi? tile cncl to :torni` neat af inlfention. relates particularly to r'inel4 for armatures; tru pe commonly )o luci-.vn lathe-Wenn@ or machine-wound Aarmature*a as distinguished from armatures embodying orrn-wonnd coils. A serious tlilenlty has been encounterefl in connection with machine-Wound armatures in that the bottoneL portions of eoine *lie slots "were rcovefcfl yby 'the enel portions ow 'tno coils conneet-ing other slots before any conductors rter; in fori; ln aeltlt teni-cai. structure is Y @ne or ne pair of slots is then connected, a. similar L :lie pro ion aronncl tlie armam Winding; progresse; thin .inanmanner` oer di to its Corresponding nei until l closes upon it, i netantialiy li ,.5 oi. the conr l a series 'f afi nature is; not prop n Specification 0.1? Letters Patent. gignfc i if Serial Eo. 3,857.

- portion of the Winding in orcler to insure an even distribution et the weight.

The details of my invention will be de- .'-J'Criliefl in connection with tlily accompanying drawings in which Figure l is an cnil View, in elevation, of an arniature Wonnll in accordance with my invention. Fig. 2 is a YJiew9 in longitudinal section, of a portion ol the armature ot Fig. l. 3 is a diagrammatic vien* of a part of the coils forming' my improved Winding. i

Referring particularly'to Figs. l anl'l Q, the armature 3l ot' a d vnanio-electric niacliine comprises a elia'ft upon which are mounted the ue'ual lamina 353 haring rentilating openings 3l. The, ends of the armature areprovitled with plates of insulating material and ot a shape corresponding' to that of tlie laminas. The core structure is retainecl'in position on tl arrnatnre shaft by collar members 3GT only one of n'liicli is shown.

As shown in Figs. l and 3, the armature, is Y prof'itlecl with thirty Slots of tlic partly- Close type. t will lie un leretood that this number is taken by way ot example onlirr and tliat any otlier suitable number ot slote4 may be chosen. The armature is adapted for use. in connection with a four-pole tieni-magnet structure and the number o' slots is therefore not a innltiple of 'the nnni'ner of poles. The pitcli or tliron7 of the windings is eight slots Wliicli exceeds the pole pitch by a small amount.

The armature is nionntecl upon a lathe or other suitable inacliine by means of wliicli it. may be rotated above tlic axis oi its shaft and also about tin-axis traneverse to the sl'iatt. Starting at the, front or commutator emi of ang; (leaned Slot. wliicli may lic considered as slot l two conductors are Siniultniieonsly in- Seriicll in tne Sl t anll eontinncfl across ille rear cnil of the armature and. inserted in .slot

9. The conductors are then continued across the front end of the armature through slot 1 and again across to slot S). This process 1s repeated until three complete turns have been made.

The bottom portions of slots 1 andlfare their occupied by a coil 37 consisting of six conductors.

' cally in 3, only one conductor being shown and the number of turns being limited to two for the sake ot' clearness. Only a small portion of the coil 37,' if anywould be visible in Fig. 1, a view of the remainder being obscured by the coils subsequently formed. However, no attempt will be made to designate particular' coils in Fig. 1 by reference numerals as this view is intended i to illustrate the general appearance only of the completed end structure.

ln the saine manner, a coil 38 is formed to connect slots 9 and 17and coils 39, 40 and 41 respectively connect slots 17 and 25, 25 and 3, and 3 and 11. The process is continued, the winding progressing around the Aarmature in a clockwise direction. Slots 1, 9, 17, 25, 3, 11, 1f), 27, 5, 13, 21, 29, 7, 15,123 and 1 are thus connected in order. lt will be not-ed that, when a series of fifteen coils has been completed, the winding closes upon itself land the slots corresponding to 'odd numbers have been connected. Approximately, the 'lower haltl of each of these slots is occupied by the completed coils, but the end connections do not cover `any por'- tion of the unoccupied slots.

Starting with slot 2, coils are then formed in the slots having even numbers in the following order;v2, 10, 18, 26, L1, 12, 20, 28, t5, 14, 22, 30, 8, 16, 24 and 2. As before, the winding lcloses when a Series ot `fifteen coils haveA been formed. ,The two series of coils thus formed constitute what may be termed the rst set of coils or one=halr the total number forming the complete Winding. Each of the slots is noliY occupied by two coils of six-conductors each, the twelve con-l ductors constituting one-half of the total number for each slot. The upper or outer portions of the slots, which remain to be filled, are unobstructed at the ends by the 'end portions of the coils formed as above described.

The set ofcuter coils is'then formed, be-

ginning with slot 10 and proceeding in ai clockwise direction around the armature to connect slots 10, 18,26, 4,v 12, 20, 28, 6, 14, 22,30, 8, 16, 2e, 2 and l0 in the order named.

The terminals of the coil are given such a length that the ends may be at-,

A as above described, a series of fifteen coils is next wound in the same manner in the slots-having odd numbers.

Each of the slots 1s now occupied by 'tour fcoils of six conductors each, melting a 'total of twenty-four conductors.

Each of the two sets of coils forming the complete winding consists of two closed series or coils, each Series consisting of fifteen coils. Referring particularly to Fig. 3, outer coils 42, 43, #14, A15 and 46, which respectively connect slots 1, 9, 17, 25, 3 and 11 in pairs, are shown by way of example to illustrate the relative distances of the inner and the outer coils from the axis of the armature.

The respective termin als of the outer coils are distinguished from the terminals oi" the inner coils and from each other by insulating sleeves...ol suitable colors. The

terminals are then connected to the corre l spending commutator bars which may be,

for example, sixty in number. Two parallel.

paths through the armature are thus provided.

The resulting end structure is a neat and compact arrangement ot the coils to form a ring: having approximately the shape of a semi-circle in cross section. The coils are symmetrically disposed about the armature axis anda balanced structure is thereby easily obtained. Because of the short end 1 throw, small quantity of material is in'- eludedv in the end connections, and the weight ot' the end structure is relatively small. he winding is of such a design that it may be readily and conveniently inserted'. The ventilation of the armature is not affected by the Winding because the openings are substantially unobstructed.

While a particular form of winding has been shown and described, it will be underu stood that the number of armature slots.

may be varied with a corresponding eect upon thelnumber of coils necessary to be formed in closing the winding. For example, if twenty-seven .slots are employed and thewinding pitch is'seven slots, twentyseven coils are necessary to close the series. Only one series is necessary, therefore, to partially fill each slot and thereby lform onedialt of the winding. By starting at a different point in the amature, an additional twenty-seven coils may be inserted in the upper portions of the slots, and a symmetrical distribution of the end connections is thereby insured.

I claim as my invention:

1. The method of winding armatures of dynamo-electric machines which consists in forming a coil in the bottoms of two slots, forming a second coil in one of said slots .tra

' iioccm ci? two slots, forming a simiicr coii' for connecting one of said Slois with "chev l in' forming a coii haring; a pitch of whicfv 'riccimg siots occupied rcs T poiri, forming c sscccii.. o? coil.J craie? and the bottom ci' a ftiii' sicu in n simiiiir around the acmcurc until cach o hc Sicts is occupied by '55h12 cosifiiiczors ci: 'vf/c cciis,

2. The mciiicd of ,nciing ariiiaturcs of iiynamocicctric machines which consists in 'sivciy criiiinga ccii having a pii'cil of which thc number of sos is not c. muitipic :for coniiccing; the bconis of 'two sicts, forming c second and similar ccii for con .mcg cnc of scifi two sics and a i'iiirfi forming coils simiiariy rciccci prcgicgsivciy around 'aid armature iiiitii che @mi of giro sios is occupied sccccci ccii,

3. The mchoci cf winding armatures if@ dynamo-clcciric machines Wcicii coiisis the number of slots is riot a muiipic, in i bottom of. a iliird sioi' and proceeding crc grcsiivciy around che crincur-c in c simiar manner uiiiii :iii ci iii-c sios occupied icy/hc same number of cciis.,

The. method of Wimiiiig armature or {ignacio-slcc@ c mamme cii cciisiss in forming a sci: coiis fic occ? A y 'hc i1 icr poricns of the siocs ami arranged tc form :at icasmoric cicscd series coiis, cach of scid coils, cxccp the first and izisic oi: tile sc ccmicciing Slots occupicd rfOA icciivciy by *die prcccding succccc g coil ic formed, and 'iicn forming c scccrd anti similiar sci cciis to occupy outer jccriciis ci scid sims.

cf, mei-hocico?? vifimiiing air arinaiirc cf c yiaiiio-cicc'cz'ic machine which cim-y siS-s in forming; si scc of cciils in oiicr aounci the circiimicrciicc of i crmffiiiirc form a cicscd scrics, cach receding and die succcc" Iormcd, ami then., 'from fi Q@time a Second closed scri c c. hc mcviicfi of winding armature ci" a dynamc-cicctric machine which consists in constructing a set of coiis in orcicr around the circumference of the armature oforin zi plurality of closed serios oiicciis, cach of id coils, except thc first the of series, conncctingsiois occupied re spcciciy by the prcccdingvaiil *the suc v,

cccdiiig coil to be fori ied, and fsiicn star` mg at another point 1n said circumferc ce, consructing ri sccond cct'ci. colis Lc mac arc Supcrposcd upon thc other .scat cti" ccis. i

"2. The 'method of Winding armaurcs or i cinocicciric machines which coiisists in :i ciccd series ci coiis ci" uniform `cach ofaic colis, except the iirstand ias?, in ih@ Scrics, occupying slots rcspcci'ivclv occu i by. hc preceding and the succeediiiig com co fcc orme.

.v vTira mctiic of winding armatures for siotsrcspcciiciy occupied by the preceding the succceciing coil 'to be wound.

.an cstimony whereof, I have hereunto subscribed my zia-mc this 13th day of Feb.,

CHARLES E. WILSON.

m a, plurality of closed Sciics of coiis' prog cssivciy around the armature, 

